[PATCH] ia64 fix for ACPI

Make ACPI aware of the iosapic irq controller on ia64 machines.

drivers/acpi/pci_irq.c

@@ -370,6 +370,10 @@ acpi_pci_irq_enable (
 		eisa_set_level_irq(dev->irq);
 	}
 #endif
+#ifdef CONFIG_IOSAPIC
+	if (acpi_irq_model == ACPI_IRQ_MODEL_IOSAPIC)
+		iosapic_enable_intr(dev->irq);
+#endif
 
 	return_VALUE(dev->irq);
 }